EP0902815B1 - Procede de protection temporaire de surfaces par des couches de polymere - Google Patents

Procede de protection temporaire de surfaces par des couches de polymere Download PDF

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Publication number
EP0902815B1
EP0902815B1 EP97925937A EP97925937A EP0902815B1 EP 0902815 B1 EP0902815 B1 EP 0902815B1 EP 97925937 A EP97925937 A EP 97925937A EP 97925937 A EP97925937 A EP 97925937A EP 0902815 B1 EP0902815 B1 EP 0902815B1
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EP
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Prior art keywords
polymer
dispersion
monomer
mono
monoethylenically unsaturated
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EP97925937A
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German (de)
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EP0902815A1 (fr
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Arend Jouke Kingma
Andreas Lappe
Andreas Deckers
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BASF SE
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BASF SE
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films

Definitions

  • the present invention relates to polymer dispersions for the temporary protection of surfaces by means of polymer layers based on C 2 -C 10 -olefins and at least one radically polymerizable comonomer, colored polymer dispersions of this type and their use for temporary protection and for the color design of surfaces.
  • the second variant proves to be disadvantageous that the protective films are glued on by hand have to be, which on the one hand is very labor intensive and which on the other hand can lead to the inclusion of air bubbles, whereby protection, especially of surfaces sensitive to corrosion, is only guaranteed to a limited extent.
  • Coating systems that do not use organic solvents, are e.g. the liquid preservatives of the DE-OS 29 26 197, which is a mixture of acid, ester waxes the basis of montan waxes, natural or hydrocarbon waxes and a basic saponifier, e.g. alkali hydroxides or ethanolamine.
  • a basic saponifier e.g. alkali hydroxides or ethanolamine.
  • they do not come without larger amounts of emulsifiers, which results in longer Weathering diffuse them out of the protective layer and thereby reduce the strength of the film or the Attack paint.
  • DE-A 35 12 564 describes a method for temporary preservation of metal and paint surfaces by applying a Polymer dispersion based on ethylene acrylic acid.
  • the received Protective layer can be removed with hot water, but it works the distance only when the layer thickness of the applied dry film is not more than about 1.5 to 20 microns. In the In practice, the film is usually removed with hot water never completely. In addition, the wash water is loosened by the Polymers burdened, resulting in undesirable follow-up costs in its Refurbishment leads. Recycling of the dissolved polymer is economical due to the high amount of waste water not useful.
  • JP 61 07 46 78 describes a preservation process that applying a first layer of carnauba wax and then another layer of an acrylonitrile / acrylate polymer includes.
  • the protective layer obtained can be considered largely cohesive film be pulled off again.
  • the two-layer structure of the protective layer proves to be since both the application and the recycling of the withdrawn Protective layer is difficult. It's also a base layer Carnauba wax used as a natural product is very expensive.
  • the polymer dispersions according to the invention offer the surprising advantage that that the protective layer can be applied in a single step the underlying surface is even and without blistering covers and can be removed in one piece.
  • the "average dry layer thickness” is understood in the frame of the present invention, the average thickness of the polymer film on the coated surface after evaporation or evaporation of the Dispersion phase and possibly other volatile constituents the dispersion.
  • C 1 -C n denotes the respectively possible number of carbon atoms of a compound or a residue.
  • C 1 -C n -Alkyl means linear or branched alkyl groups with 1 to n carbon atoms. Examples include C 1 -C 10 alkyl groups, such as methyl, ethyl, n-propyl, i-propyl, n-butyl, 2-butyl, i-butyl, t-butyl, n-pentyl, 2-pentyl, neopentyl , n-hexyl, 2-ethylhexyl, n-octyl or n-decyl.
  • C 11 -C 18 -alkyl radicals such as undecyl, lauryl, tridecyl, myristyl, pentadecyl, palmityl, heptadecyl and stearyl.
  • C 5 -C 10 -Cyloalkyl means cyclopropyl, cyclobutyl, cyclopentyl, cycloheptyl or cyclooctyl, which is optionally substituted by 1, 2 or 3 C 1 -C 4 alkyl groups, preferably methyl or ethyl.
  • Aryl is preferably understood to mean phenyl or naphthyl which is optionally substituted by 1, 2, 3 or 4 C 1 -C 4 alkyl groups, C 1 -C 4 alkoxy groups or halogen atoms.
  • Aralkyl groups are aryl groups bonded via alkylene groups, such as, for example, benzyl or phenylethylene.
  • Preferred monomers a) are C 2 -C 6 olefins, in particular ethylene, propene, 1-butene, 2-butene or isobutene or mixtures thereof, mixtures which contain ethylene as the main component being preferred.
  • Ethylene is particularly preferably used as the sole monomer a).
  • Monomers b 1 ) are particularly preferred, namely ⁇ , ⁇ -unsaturated C 3 -C 6 carboxylic acids or C 4 -C 8 dicarboxylic acids, in particular acrylic acid, methacrylic acid, crotonic acid, isocrotonic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, itaconic anhydride or mixtures of these monomers.
  • Acrylic acid, methacrylic acid, mixtures of these two monomers or mixtures which contain more than 90% of one or both of these monomers are particularly preferably used.
  • Preferred monomers b 2 are the C 1 -C 10 alkyl esters, C 5 -C 10 cyclopalkyl esters, C 6 -C 20 aryl and / or aralkyl esters of ⁇ , ⁇ -unsaturated C 3 -C 6 carboxylic acids or C 4 -C 8 dicarboxylic acids, in particular acrylic acid or methacrylic acid, in question.
  • Particularly preferred monomers b 2 ) are methyl, ethyl, n-propyl, i-propyl, n-butyl, 2-butyl, iso-butyl, t-butyl, n-hexyl and 2- Ethylhexyl (meth) acrylate, but also the corresponding mono- and diesters of maleic and fumaric acid, or their mixtures.
  • Particularly preferred monomer combinations are ethylene / acrylic acid; Ethylene / methacrylic acid; Ethylene / acrylic acid / n-butyl acrylate and ethylene / acrylic acid / 2-ethylhexyl acrylate.
  • the relative proportions of the monomers are preferably chosen so that the glass transition temperature of the polymer below room temperature, especially below 0 ° C and particularly preferably below -20 ° C.
  • the polymer dispersions used according to the invention contain polymers which are preferably composed of 35 to 92% by weight, in particular 45 to 87.8% by weight, of monomers a), 8 to 25% by weight, in particular 12 to 25% by weight Monomers b 1 ) and 0 to 40% by weight, in particular 0.2 to 30% by weight, of monomers b 2 ) are built up.
  • Monomer a) preferably comprises ethylene, monomer b 1 ) acrylic acid and / or methacrylic acid and monomer b 2 ) C 1 -C 10 -alkyl acrylate and / or methacrylate.
  • the polymers used according to the invention and their manufacture is known in principle to the person skilled in the art. You leave through all common polymerization processes, e.g. by Emulsion polymerization (see Houben-Weyl, methods of inorganic Chemistry, Volume E20 / I, Macromolecular Substances, Georg-Thieme-Verlag, Stuttgart, 1987), or preferably by continuous Prepare high pressure polymerization. The latter approach is recommended especially in the case of the volatile olefins ethylene and propylene. In addition, emulsifier-free are made in this way Get polymer dispersions.
  • Emulsion polymerization see Houben-Weyl, methods of inorganic Chemistry, Volume E20 / I, Macromolecular Substances, Georg-Thieme-Verlag, Stuttgart, 1987
  • emulsifier-free are made in this way Get polymer dispersions.
  • Continuous high-pressure polymerization is also known in principle to the person skilled in the art and can be carried out, for example, in the manner described in DE-A 34 20 168 and DE-A 35 12 564.
  • the polymerization generally takes place at temperatures in the range from 150 to 300 ° C. and a pressure from 1000 to 3000 bar in the presence of at least one radical initiator, for example a peroxo compound such as t-butylperoxopivalate or an azo compound such as azobisisobutyronitrile.
  • at least one radical initiator for example a peroxo compound such as t-butylperoxopivalate or an azo compound such as azobisisobutyronitrile.
  • up to 5% by weight, based on the monomers, can be present on regulators.
  • Suitable regulators are, for example, aliphatic aldehydes with 3 to 6 C atoms, in particular propionaldehyde or n-butyraldehyde, aliphatic ketones with 3 to 6 C atoms, for example acetone or methyl ethyl ketone. It should be noted here that the ⁇ -olefins with more than 3 C atoms can also intervene as regulators in the polymerization.
  • the polymerization conditions are set so that the polymers have a melt viscosity at 120 ° C. of at least 1000 mm 2 / sec as the lower limit and an MFI value of at least 1, measured at 160 ° C. and 325 g load, as the upper limit.
  • the polymers come as a dispersion with a Solids content of preferably 5 to 40 wt .-% and in particular 10 to 35% by weight for use, preferably at least 40% the acid groups present in the polymer in neutralized form available.
  • Suitable bases for neutralization are, for example Sodium or potassium hydroxide, ammonia, but preferably Alkylamines, diamines or triamines, especially those whose Alkyl radicals with hydroxyl groups - in free, ethoxylated or esterified form - are substituted.
  • amines into consideration mono-, di- or trialkanolamines with preferably 2 up to 6 carbon atoms in the hydroxyalkyl radical, monoalkyldialkanolamines and Dialkylmonoalkanolamines each with 2 to 8 carbon atoms in the alkyl and Hydroxyalkyl.
  • the alkyl or hydroxyalkyl chains also contain ether functions.
  • mixtures of the bases mentioned can also be used.
  • Particularly preferred amines are, for example, diethanolamine, Triethanolamine, 2-amino-2-methylpropanol, dimethylethanolamine and Diethylethanolamine, dimethylaminodiglycol, diethylaminodiglycol as well as ethylenediamine or diethylenetriamine.
  • the dispersions used preferably contain no emulsifier, since the polymers are usually self-emulsifying are.
  • the emulsions are produced by emulsion by a conventional method (cf. DE-A 35 12 564).
  • the polymers are, for example, in an emulsifying autoclave at temperatures above the melting point of the polymer, preferably in the range from 90 to 180 ° C., in particular 90 up to 150 ° C and a pressure between normal pressure and 4 bar, with the necessary amount of water and the corresponding amount of a base, preferably an amine, diamine or triamine, and optionally other auxiliaries dispersed with stirring. Then will cooled to room temperature with continued stirring.
  • a base preferably an amine, diamine or triamine, and optionally other auxiliaries dispersed with stirring.
  • the dispersion can also be carried out in a conventional extruder, preferably a twin-shaft mixer, by mixing the components (Polymer, water, base and auxiliary substances) at temperatures in the range of 70 to 200 ° C and a pressure of 1 to 40 bar respectively.
  • a conventional extruder preferably a twin-shaft mixer
  • the polymer dispersion used can also include polyethylene oxide waxes, together with nonionic emulsifiers, or synthetic or contain natural hydrocarbon waxes.
  • suitable Polyethylene oxidate waxes are known and commercially available. They have an acid number of 18 to 25 and a molecular weight characterized from 2000 (weight average) to 10000.
  • Any synthetic or natural ones used Hydrocarbon waxes are preferably the known polyethylene waxes with molecular weights from 500 to 6000 and melting points in Range from 40 to 110 ° C, as well as natural paraffin with one Melting point from 40 to 100 ° C.
  • the waxes mentioned can either in the form of an aqueous dispersion, which is also commercially available is available, used or together with the Polymers are dispersed.
  • the polymers can be used Colorants, such as pigments or dyes, preferably pigments, inflict. They are usually made by mixing of pigments with polymers according to those in plastics processing usual processing methods. For example, one poses colored dispersions by extruding them together and then Disperse the colored polymers in the aqueous Phases according to one of the procedures described above.
  • Colorants such as pigments or dyes, preferably pigments, inflict. They are usually made by mixing of pigments with polymers according to those in plastics processing usual processing methods. For example, one poses colored dispersions by extruding them together and then Disperse the colored polymers in the aqueous Phases according to one of the procedures described above.
  • the invention thus also relates to colored aqueous polymer dispersions, which, dissolved or dispersed in the polymer phase, as further component c) at least one pigment, at least a dye, optionally together with at least a UV stabilizer.
  • the colored dispersions according to the invention have the surprising Advantage that the pigments or dyes in the polymer phase are evenly dispersed or dissolved and not precipitate or dissolve in the aqueous phase. Since the coloring components also when applying and drying the If polymer dispersions remain in the polymer, the colored ones are suitable Polymer dispersions not only for temporary protection but also also for reversible coloring of surfaces and enable hence their temporary decorative design.
  • UV stabilizers can also be added (in amounts of approximately 0.1 ) to 1 wt .-%, based on the total weight of the polymer), the damage or destruction caused by UV radiation both the surface to be protected and the protective layer prevent.
  • the UV stabilizer can be used in combination with or added instead of pigments and / or dyes.
  • Colored dispersions in which the polymer contains as monomer a) ethylene, as monomer b 1 ) acrylic acid and / or methacrylic acid and as monomer b 2 ) C 1 -C 10 -alkyl acrylate and / or methacrylate are particularly preferred.
  • the polymer content is also preferred for the colored dispersions about 5 to 40 wt .-%, based on the total weight of the Dispersion. Colored dispersions in which at least about 40 mol% of the carboxyl group present in the polymer, preferably with a low molecular weight amine according to the above Definition, are neutralized.
  • the invention also relates to the use of Colored polymer dispersions described above for color Design of surfaces, whereby total areas or, e.g. With Using stencils, partial areas with at least one colored Polymer can be coated.
  • the colored polymer dispersions but are just like the corresponding undyed dispersions can be used for the temporary protection of surfaces.
  • inorganic colorants pigments, dyes
  • organic colorants are suitable for coloring the polymer layer (see Ullmann's Encyclopedia of Industrial Chemistry, 5th edition, volume A3, pp. 144-149, A20, pp. 243-413 and H. Sechtling , Plastic paperback, 21st ed., P. 40).
  • inorganic or organic colorants can be used, unless the stability or another essential property of the polymer dispersion according to the invention and / or the coating produced therewith are adversely affected by the colorant.
  • suitable inorganic pigments are TiO 2 and carbon blacks.
  • suitable organic pigments are: Azo pigments, metal complex pigments, such as azo and azomethine metal complexes, isoindolinone and isoindoline pigments, phthalocyanine pigments, quinakridone pigments, perinone and perylene pigments, anthraquinone pigments, diketopyrrolopyrrole pigments, thioindigo pigments, thioindigo pigments Pigments, triphenylmethane pigments, quinophthalone pigments and fluorescent pigments.
  • metal complex pigments such as azo and azomethine metal complexes, isoindolinone and isoindoline pigments, phthalocyanine pigments, quinakridone pigments, perinone and perylene pigments, anthraquinone pigments, diketopyrrolopyrrole pigments, thioindigo pigments, thioindigo pigments Pigments, triphenylmethane pigments, quinophthalone pigment
  • the mechanical properties of the Polymer film does not adversely change as long as it is on the too protective of the surface to be decorated is applied in the polymer phase is retained and especially in the dispersion phase (aqueous phase) is essentially insoluble.
  • Suitable UV stabilizers are all usable for plastics inorganic or organic UV stabilizers, such as substituted benzophenones, salicylic acid esters, hydroxyphenylbenztriazoles and the ones called Hindered Amines Light Stabilizers (HALS) known compounds.
  • HALS Hindered Amines Light Stabilizers
  • the colored or uncolored polymer dispersion as far as possible apply evenly to the surface to be protected.
  • the application is carried out, for example, by airless spraying With the help of a pressure gun, or in the form of electrostatic painting.
  • Application with a brush or roller is also possible.
  • the subsequent drying is usually carried out by infrared light or in the air flow, if necessary in the hot air flow.
  • the Application can be done in a single operation or repeatedly with intermediate drying phases.
  • the amount of dispersion per unit area is chosen so that after drying a layer thickness of at least 20 microns, preferably at least 25 ⁇ m, particularly preferably at least 35 ⁇ m and in particular at least 60 ⁇ m and up to 1000 ⁇ m, preferably up to receives about 300 microns.
  • the present invention opens up the possibility of a variety of surfaces, for example glass, ceramics, plastics, preferably painted metal surfaces, and with certain restrictions also reversibly protect wood.
  • surfaces for example glass, ceramics, plastics, preferably painted metal surfaces, and with certain restrictions also reversibly protect wood.
  • the colored dispersions are suitable for decorative purposes, especially in combination with her protective effect.
  • the polymers used were prepared in accordance with Example 1 of DE-A 3 512 564 by high-pressure polymerization of the monomers.
  • Heliogen® Blue K 6902 is a phthalocyanine pigment from BASF Paliotol® Yellow K 1841 D is a yellow pigment from BASF Paliogen® Red K 3911 HD is a red metal complex pigment from BASF Titanium dioxide Cl 2220 was obtained from Kronos AG.
  • Printex® 60 is a carbon black pigment from Degussa AG.
  • the melt viscosity is determined according to the DGF unit method C-IV 7 (68) determined in the capillary viscometer, a melt of 120 ° C through a capillary and the time of passage is measured.
  • the MFI value (Melt Flow Index) gives the amount of polymer melt in grams, at a given temperature and load be pressed through a standardized nozzle. The determination is made according to DIN 53735. The given index gives the measuring temperature (° C) and the load (g).
  • the ethylene / acrylic acid copolymer was in a twin screw extruder extruded from Example 1 at 100 ° C. Via a side approach a blue phthalocyanine pigment (Heliogen® Blau K 6902) added so that the polymer in the discharge 2 wt .-% pigment contained.
  • a blue phthalocyanine pigment Heliogen® Blau K 6902
  • the polymer was 2% by weight of a yellow pigment (Paliotol® Yellow K 1841 D) added.
  • Example 4 Analogously to Example 4, the polymer was 2% by weight of a red pigment (Paliogen® Rot K 3911 HD) added.
  • a red pigment Paliogen® Rot K 3911 HD
  • Example 4 Analogously to Example 4, 2% by weight of titanium dioxide (titanium dioxide C12220) added.
  • Example 4 Analogously to Example 4, 5% by weight of carbon black (Printex® 60) was added to the polymer. added.
  • Example 2 Analogously to Example 1, 140 parts of the pigment-colored copolymers, amine base and water (ad 680 parts) obtainable on the basis of Examples 4 to 8 were emulsified. Further parameters and the characterization of the polymer dispersions can be found in Table 2. The dry value for all batches was around 21 to 22% by weight. E.g.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (10)

  1. Dispersion de polymère qui contient, dans une dispersion en phase aqueuse, un polymère dispersé et constitué de
    a) au moins une oléfine en C2 à C10 et
    b) au moins un copolymère qui est polymérisable avec l'oléfine, dans des conditions radicalaires, et
    c) au moins un stabilisant aux UV et/ou au moins un colorant qui est présent, en phase polymère, sous forme dispersée ou sous forme de solution,
    le polymère présentant une viscosité à l'état fondu d'au moins 1 000 mm2/s (à une température de 120°C), en tant que limite inférieure, et une valeur MFI d'au moins 1, mesurée à une température de 160°C et sous une charge de 325 g, en tant que limite supérieure.
  2. Dispersion de polymère selon la revendication 1, caractérisée en ce que l'on choisit le monomère b) dans le groupe formé par les acides dicarboxyliques et monocarboxyliques à insaturation monoéthylénique et leurs anhydrides; les amides dérivés des acides dicarboxyliques et monocarboxyliques à insaturation monoéthylénique; les N-monodialkylamides et les N,N-dialkylamides dérivés des acides dicarboxyliques et monocarboxyliques à insaturation monoéthylénique; les éthers et les alcools à insaturation monoéthylénique; les composés N-vinylhétérocycliques, les esters vinyliques dérivés des acides monocarboxyliques; les monoesters dérivés des acides monocarboxyliques à insaturation monoéthylénique; et les monoesters et les diesters dérivés des acides dicarboxyliques à insaturation monoéthylénique.
  3. Dispersion de polymère selon la revendication 1, caractérisé en ce que le polymère dispersé contient, en tant que monomères b),
    b1) au moins un acide dicarboxylique et/ou monocarboxylique à insaturation en position α,β ou un de leurs anhydrides et
    b2) éventuellement au moins un monomère présentant au moins une fonction ester.
  4. Dispersion de polymère selon l'une des revendications précédentes, dans laquelle les groupes carboxyliques contenus dans le polymère sont neutralisés, à raison d'au moins 40% en moles, avec une amine choisie dans le groupe formé par les monoalcanolamines, les dialcanolamines et les trialcanolamines présentant 2 à 6 atomes de C dans le reste hydroxyalkyle, les monoalkyl-dialcanolamines et les dialkyl-monoalcanolamines présentant chacun 2 à 8 atomes de C dans le reste alkyle et le reste hydroxyalkyle.
  5. Dispersion de polymère selon la revendication 3 ou 4, caractérisée en ce que leur polymère dispersé contient, en tant que monomère a), l'éthylène, en tant que monomère b1), l'acide acrylique et/ou l'acide méthacrylique et, en tant que monomère b2), l'acrylate d'alkyle en C1 à C10 et/ou le méthacrylate d'alkyle en C1 à C10.
  6. Dispersion de polymère selon l'une des revendications précédentes, caractérisé en ce que le colorant est choisi dans le groupe formé par les colorants et pigments inorganiques, organiques et organométalliques qui sont pour l'essentiel non solubles dans la dispersion en phase aqueuse.
  7. Mise en oeuvre d'une dispersion de polymère selon la définition d'une des revendications 1 à 6, pour la protection et/ou pour la coloration des surfaces.
  8. Procédé de protection temporaire de surfaces par application d'une dispersion de polymère selon la définition de la revendication 1, suivi d'un séchage de la couche de dispersion appliquée, procédé lors duquel on obtient une couche de polymère solide sur la surface destiné à la protection, laquelle couche présente une épaisseur moyenne de couche sèche supérieure à 20 µm, que l'on enlève ultérieurement par des moyens uniquement mécaniques.
  9. Procédé selon la revendication 8, caractérisé en ce que la couche de polymère présente une épaisseur moyenne de couche sèche comprise dans la plage d'environ 25 µm à 1 000 µm.
  10. Procédé de préparation d'une dispersion de polymère selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'on soumet à une extrusion un polymère constitué de
    a) au moins une oléfine en C2 à C10 et
    b) au moins un copolymère qui est polymérisable avec l'oléfine, dans des conditions radicalaires,
    présentant une viscosité à l'état fondu d'au moins 1 000 mm2/s (à une température de 120°C), en tant que limite inférieure, et une valeur MFI d'au moins 1, mesurée à une température de 160°C et à une charge de 325 g, en tant que limite supérieure,
    avec au moins un stabilisant aux UV et/ou au moins un colorant,
    et en ce que l'on le disperse ensuite en phase aqueuse.
EP97925937A 1996-05-24 1997-05-23 Procede de protection temporaire de surfaces par des couches de polymere Expired - Lifetime EP0902815B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19621037A DE19621037A1 (de) 1996-05-24 1996-05-24 Verfahren zum temporären Schutz von Oberflächen durch Polymerschichten
DE19621037 1996-05-24
PCT/EP1997/002642 WO1997045496A1 (fr) 1996-05-24 1997-05-23 Procede de protection temporaire de surfaces par des couches de polymere

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EP0902815B1 true EP0902815B1 (fr) 2002-08-07

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JP (1) JP2000511571A (fr)
KR (1) KR20000015909A (fr)
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BR (1) BR9709269A (fr)
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DE19636077A1 (de) * 1996-09-05 1998-03-12 Basf Ag Verwendung wäßriger Polymerisatdispersionen für den Korrosionsschutz metallischer Oberflächen
CH693784A5 (de) * 1999-06-04 2004-02-13 Enviropeel Internat Ltd Verfahren zur Erzeugung und zur Entfernung einer Schutzschicht, Masse zur Erzeugung der Schutzschicht und Verwendung der Schutzschicht.
DE10155184A1 (de) 2001-11-12 2003-05-22 Bayer Ag Emulsionspolymerisate als Abziehlack
NL1019786C2 (nl) * 2002-01-18 2003-07-21 Akzo Nobel Nv Verfsamenstelling voor een afneembare decoratieve laag.
US8383718B2 (en) 2004-04-27 2013-02-26 Akzo Nobel Coatings International B.V. Pigmented strip paint
DE102008063984A1 (de) 2008-12-19 2010-07-01 Dürr Systems GmbH Verfahren und Vorrichtung zum Aufbringen einer Lackfolie als Flüssigfolie
DE102010009239A1 (de) 2009-03-20 2010-09-23 Merck Patent Gmbh Wässrige Beschichtungszusammensetzung
JP6360049B2 (ja) 2012-06-25 2018-07-18 スリーエム イノベイティブ プロパティズ カンパニー 起伏のある表面をコーティングするための器具
JP2016069633A (ja) * 2014-09-30 2016-05-09 株式会社ネオス 塗料剥離用水性プライマー組成物および塗料剥離方法

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JPS5546431B2 (fr) * 1973-04-04 1980-11-22
JPS5177628A (ja) * 1974-12-28 1976-07-06 Kopia Kk Tokoyososeibutsu
US4540736A (en) * 1982-05-17 1985-09-10 Allied Corporation Temporary protective coating composition of ethylene and acrylic acid and a base
US5292794A (en) * 1991-07-01 1994-03-08 Alliedsignal Inc. Removable protective coating composition for spray painting areas
US6124044A (en) * 1995-10-27 2000-09-26 Cal-West Equipment Company, Inc. Polymeric peel-off coating compositions and methods of use thereof

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DE59707923D1 (de) 2002-09-12
JP2000511571A (ja) 2000-09-05
KR20000015909A (ko) 2000-03-15
CN1226277A (zh) 1999-08-18
CN1121463C (zh) 2003-09-17
DE19621037A1 (de) 1997-11-27
EP0902815A1 (fr) 1999-03-24
WO1997045496A1 (fr) 1997-12-04
BR9709269A (pt) 1999-08-10

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